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From "Hoss Man (JIRA)" <>
Subject [jira] Commented: (SOLR-1911) File descriptor leak while indexing, may cause index corruption
Date Sat, 15 May 2010 05:59:42 GMT


Hoss Man commented on SOLR-1911:

bq. one place to look would be ref counting in IndexReader

true, but at this point w/o any idea what files we're dealing with it could be anything (SOLR-1877
comes to mind)

> File descriptor leak while indexing, may cause index corruption
> ---------------------------------------------------------------
>                 Key: SOLR-1911
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: update
>    Affects Versions: 1.5
>         Environment:         Ubuntu Linux, Java build 1.6.0_16-b01
>         Solr Specification Version:
> 	Solr Implementation Version: 4.0-dev exported - simon - 2010-05-12 16:17:46  -- bult
from updated trunk
> 	Lucene Specification Version: 4.0-dev
> 	Lucene Implementation Version: 4.0-dev exported - 2010-05-12 16:18:26
> 	Current Time: Thu May 13 12:21:12 EDT 2010
> 	Server Start Time:Thu May 13 11:45:41 EDT 2010
>            Reporter: Simon Rosenthal
>            Priority: Critical
> While adding documents to an already existing index using this build, the number of open
file descriptors increases dramatically until the open file per-process limit is reached (1024)
, at which point there are error messages in the log to that effect. If the server is restarted
the index may be corrupt
> commits are handled by autocommit every 60 seconds or 500 documents (usually the time
limit is reached first). 
> mergeFactor is 10.
> It looks as though each time a commit takes place, the number of open files  (obtained
from " lsof -p `cat` | egrep ' [0-9]+r ' ") increases by 40, There are several open
file descriptors associated with each file in the index.
> Rerunning the same index updates with an older Solr (built from trunk in Feb 2010) doesn't
show this problem - the number of open files fluctuates up and down as segments are created
and merged, but stays basically constant.

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